All that I know is nothing - I'm not even sure of that.

The soul, like the body, accepts by practice whatever habit one wishes it to contact.

Those then who know not wisdom and virtue, and are always busy with gluttony and sensuality, go down and up again as far as the mean; and in this region they move at random throughout life, but they never pass into the true upper world; thither they neither look, nor do they ever find their way, neither are they truly filled with true being, nor do they ever taste of pure and abiding pleasure.

I was afraid that by observing objects with my eyes and trying to comprehend them with each of my other senses I might blind my soul altogether.

People learn more on their own rather than being force fed.

Nobody is qualified to become a statesman who is entirely ignorant of the problem of wheat.

Nothing is to be preferred before justice.